/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ide.api.editor.signature;

import com.google.common.base.Optional;

import javax.validation.constraints.NotNull;
import java.util.List;

/**
 * Result of calculation of signatures, represent the signature of something callable.
 *
 * @author Evgen Vidolob
 */
public interface SignatureHelp {

    /**
     * One or more signature.
     * @return
     */
    @NotNull
    List<SignatureInfo> getSignatures();

    /**
     * The active signature
     *
     * @return
     */
    Optional<Integer> getActiveSignature();

    /**
     * The active parameter of the active signature.
     * @return
     */
    Optional<Integer> getActiveParameter();
}
